
.background{
    width: 800px;
    height: 700px;
    background: url(http://pic1.nipic.com/20090325/_150914056_2.jpg) no-repeat center;
    background-size: cover;
    margin: 50px auto;
}
.box{
    background: linear-gradient(to right,rgb(),rgb());
    width: 800px;
    height: 700px;
    border: 1px solid pink;
    margin: 50px auto;
}
.header{
    position: absolute;
    width: 100px;
    height: 100px;
    margin:50px auto;
    margin-left:120px; 
    border-radius: 50%;
    background: url(https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1558157695907&di=a5eca7c9543d3116507924c8764ea3d0&imgtype=0&src=http%3A%2F%2Fimg.alicdn.com%2Fimgextra%2Fi1%2F3286922093%2FTB2IGwre93PL1JjSZFtXXclRVXa_%2521%25213286922093-0-daren.jpg);
    background-size: cover;
    border: 2px solid pink;
}
.card{
    width: 350px;
    margin-left:100px;
    margin-top:80px;  
    box-shadow: 0 30px 50px 0 rgba(221, 201, 201, 0.479);
    border-radius: 15px;
    background: black;
}
.head{
    position: relative;
    width: 350px;
    height: 200px;
    border-radius: 15px 15px 0 0;
    margin-bottom: 50px;
    background-image: linear-gradient(135deg,rgb(71,56,73) 0%,rgb(50,58,45) 100%);
}
.former{
    padding: 30px 20px;
    margin: 50px auto;
}
.inner{
    position: relative;
    margin-bottom:20px;
    height: 40px;
    background: #ffffff;
    border: 1px solid #DFE2E6;
    box-shadow: 0 0 3px 0 rgba(0,0,0,0.05);
    border-radius:20px;  
}
.inner input{
    width: 220px;
    height: 38px;
    line-height: 40px;
    margin-left: 40px;
    outline: 0;
    border: none;
    font-size: 13px;
    font-weight: lighter;
    color: rgb(59, 61, 63);
    text-align: left;
}
.icon{
    position: absolute;
    top: 12px;
    left: 12px;
    width: 20px;
    height: 16px;
}
.icon-user{
    background: url(../image/信封.png) no-repeat center;
    background-size:contain; 
}
.icon-psw{
    background: url(../image/密码.png) no-repeat center;
    background-size:contain; 
}
.button{
    width: 310px;
    height: 53px;
    background-color: red;  
    border-radius:20px;  
}